Steam-shovel a-frame and connection.



PATENTED DEC. 31, 1907.

O. HETLESAETER. STEAM SHOVEL; A-FRAME AND CONNECTION.

APPLIGATION FILED SEPT.15, 1905.

W INVENTOR B2 ATTORNEY.

W 1 TN ESSES: @A

THE NORRIS PETERS co, wnsl-uucrmv, n. c.

UNITED STATES PATENT OFFICE.

OLAF HETLESAETER, OF MILWAUKEE, WISCONSIN, ASSIGNOR TO ALLIS-CHALMERS COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF NEW JERSEY.

STEAM-SHOVEL A-FRAME AND CONNECTION.

Specification of Letters Patent.

Patented Dec. 31, 1907.

Application filed September 15, 1905. Serial No. 278,563.

T 0 all whom it may concern:

Be it known that I, OLAF HETLEsAETER, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Steam Shovel A-Frames and Connections, of Which the following is a specification.

This invention relates to certain improvements in a laterally stiffening member supporting guys for an over-hanging arm or boom.

More particularly applied to excavators, this feature is termed an A-frame, and is in the structure disclosed a steel forging.

By my improvements I produce a strong structure having a neat and compact connection for the guys, which is not liable to Work loose.

In the drawings,Figure 1 is a front elevation partly broken away, of my improved A-frame With saddle or cap therefor; Fig. 2

is a side elevation thereof; Fig. 8 is a rear elevation of the guy connection or saddle; and Fig. 4 is a side elevation of a swingably mounted overhanging arm for an excavator or crane, showing how my A-frame is applied thereto.

The one-piece member 1 has the spaced legs serving to laterally stiffen the guys which are attached to the connection 2 at the bent portion of this one-piece A-frame. As there is not proportionally as great a strain on the frame at the bend, this portion is reduced to facilitate bending and thus the cost of manufacture is reduced.

Bolts 3 securely hold the saddle 2 in position on A-frame 1, the holes being bored in the A-frame after the parts are assembled to insure a more accurate fit. This connection or saddle 2 has lugs 4 projecting from one side to which the guys may be attached. This saddle 2 also has a continuous recess 5 in its under side Which receives the reduced bent portion of the A-frame 1. The back guys 6 engage the lugs 4 While the boom guys 7 connect the saddle 2 With the sWingable overhanging arm or boom 8.

Having thus described my invention, What I claim and desire to secure by Letters Patent 1s,

l. A one-piece A-frame having a reduced portion at the bend.

2. A one-piece A-frame havin a reduced portion at the bend, and a saddle having a continuous recess for the A-frame.

3. The combination of a support, an A- frame on the support, a saddle formed with a single recess for reception of the A-frame apex, and guys connecting to the saddle for staying the A-frame.

d. The combination of a support, a onepiece A frame on the support, a saddle formed With a continuous recess into Which the apex of the A-frame is housed, and guys connecting to the saddle for staying the A- frame.

5. The combination of a support, a onepiece A-frame on the support and having a reduced portion at the apex, a saddle on the A-frame at the reduced portion, a boom on the support, and guys for staying the boom and A-frame.

6. The combination of an A-frame bent to form an apex and having a reduced portion at the bend, and a saddle attached to the A- frame at the reduced portion.

7. A forged one-piece A-frame having a reduced portion at the forged apex.

In testimony whereof I affix my signature in presence of tWo Witnesses.

OLAF HETLESAETER.

Witnesses:

MAX W. SABLE, L. P. MARTIN. 

